Ann Arbor Hash Bash 50th Anniversary, April 2, 2022 Year 2022 Month April Day 2 Rights Held By Ann Arbor District Library Copyright Creative Commons (Attribution, Non-Commercial, Share-alike) Ann Arbor Hash Bash 50th Anniversary Photo Subjects Marijuana Hash Bash Recreational Drugs Cannabis Harlan Hatcher Graduate Library Ann Arbor Hash Bash 50th Anniversary Amy Cantu University of Michigan Diag Harlan Hatcher Graduate Library